diff --git a/light9/curvecalc/gladetest.glade b/light9/curvecalc/gladetest.glade
new file mode 100644
--- /dev/null
+++ b/light9/curvecalc/gladetest.glade
@@ -0,0 +1,539 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <requires lib="gtk+" version="2.16"/>
+  <!-- interface-naming-policy project-wide -->
+  <object class="GtkWindow" id="window1">
+    <child>
+      <object class="GtkVBox" id="vbox1">
+        <property name="visible">True</property>
+        <child>
+          <object class="GtkMenuBar" id="menubar1">
+            <property name="visible">True</property>
+            <property name="ubuntu_local">True</property>
+            <child>
+              <object class="GtkMenuItem" id="menuitem1">
+                <property name="visible">True</property>
+                <property name="label" translatable="yes">_Curvecalc</property>
+                <property name="use_underline">True</property>
+                <child type="submenu">
+                  <object class="GtkMenu" id="menu1">
+                    <property name="visible">True</property>
+                    <property name="ubuntu_local">True</property>
+                    <child>
+                      <object class="GtkImageMenuItem" id="imagemenuitem2">
+                        <property name="label">gtk-open</property>
+                        <property name="visible">True</property>
+                        <property name="use_underline">True</property>
+                        <property name="use_stock">True</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImageMenuItem" id="imagemenuitem3">
+                        <property name="label">gtk-save</property>
+                        <property name="visible">True</property>
+                        <property name="use_underline">True</property>
+                        <property name="use_stock">True</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkSeparatorMenuItem" id="separatormenuitem1">
+                        <property name="visible">True</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImageMenuItem" id="imagemenuitem5">
+                        <property name="label">gtk-quit</property>
+                        <property name="visible">True</property>
+                        <property name="use_underline">True</property>
+                        <property name="use_stock">True</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImageMenuItem" id="imagemenuitem10">
+                        <property name="label">gtk-about</property>
+                        <property name="visible">True</property>
+                        <property name="use_underline">True</property>
+                        <property name="use_stock">True</property>
+                      </object>
+                    </child>
+                  </object>
+                </child>
+              </object>
+            </child>
+            <child>
+              <object class="GtkMenuItem" id="menuitem2">
+                <property name="visible">True</property>
+                <property name="label" translatable="yes">_View</property>
+                <property name="use_underline">True</property>
+                <child type="submenu">
+                  <object class="GtkMenu" id="menu2">
+                    <property name="visible">True</property>
+                    <property name="ubuntu_local">True</property>
+                    <child>
+                      <object class="GtkImageMenuItem" id="imagemenuitem6">
+                        <property name="label">gtk-cut</property>
+                        <property name="visible">True</property>
+                        <property name="use_underline">True</property>
+                        <property name="use_stock">True</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImageMenuItem" id="imagemenuitem7">
+                        <property name="label">gtk-copy</property>
+                        <property name="visible">True</property>
+                        <property name="use_underline">True</property>
+                        <property name="use_stock">True</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImageMenuItem" id="imagemenuitem8">
+                        <property name="label">gtk-paste</property>
+                        <property name="visible">True</property>
+                        <property name="use_underline">True</property>
+                        <property name="use_stock">True</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImageMenuItem" id="imagemenuitem9">
+                        <property name="label">gtk-delete</property>
+                        <property name="visible">True</property>
+                        <property name="use_underline">True</property>
+                        <property name="use_stock">True</property>
+                      </object>
+                    </child>
+                  </object>
+                </child>
+              </object>
+            </child>
+            <child>
+              <object class="GtkMenuItem" id="menuitem3">
+                <property name="visible">True</property>
+                <property name="label" translatable="yes">_Playback</property>
+                <property name="use_underline">True</property>
+                <child type="submenu">
+                  <object class="GtkMenu" id="menu3">
+                    <property name="visible">True</property>
+                    <property name="ubuntu_local">True</property>
+                    <child>
+                      <object class="GtkMenuItem" id="menuitem5">
+                        <property name="visible">True</property>
+                        <property name="label" translatable="yes">Play/pause</property>
+                        <property name="use_underline">True</property>
+                      </object>
+                    </child>
+                  </object>
+                </child>
+              </object>
+            </child>
+            <child>
+              <object class="GtkMenuItem" id="menuitem4">
+                <property name="visible">True</property>
+                <property name="label" translatable="yes">Poin_ts</property>
+                <property name="use_underline">True</property>
+              </object>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="position">0</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkVBox" id="vbox4">
+            <property name="visible">True</property>
+            <child>
+              <object class="GtkHBox" id="hbox9">
+                <property name="visible">True</property>
+                <child>
+                  <object class="GtkLabel" id="label15">
+                    <property name="visible">True</property>
+                    <property name="label" translatable="yes">new curve named (C-N):</property>
+                  </object>
+                  <packing>
+                    <property name="position">0</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkEntry" id="entry4">
+                    <property name="visible">True</property>
+                    <property name="can_focus">True</property>
+                    <property name="invisible_char">●</property>
+                  </object>
+                  <packing>
+                    <property name="position">1</property>
+                  </packing>
+                </child>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="position">0</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkScrolledWindow" id="scrolledwindow1">
+                <property name="visible">True</property>
+                <property name="can_focus">True</property>
+                <property name="hscrollbar_policy">never</property>
+                <child>
+                  <object class="GtkVBox" id="vbox5">
+                    <property name="visible">True</property>
+                    <child>
+                      <object class="GtkHBox" id="curveRow">
+                        <property name="visible">True</property>
+                        <child>
+                          <object class="GtkVBox" id="vbox2">
+                            <property name="visible">True</property>
+                            <child>
+                              <object class="GtkLabel" id="label16">
+                                <property name="visible">True</property>
+                                <property name="label" translatable="yes">curve 'music'</property>
+                              </object>
+                              <packing>
+                                <property name="expand">False</property>
+                                <property name="fill">False</property>
+                                <property name="position">0</property>
+                              </packing>
+                            </child>
+                            <child>
+                              <object class="GtkHBox" id="hbox11">
+                                <property name="visible">True</property>
+                                <child>
+                                  <object class="GtkCheckButton" id="checkbutton1">
+                                    <property name="label" translatable="yes">C</property>
+                                    <property name="visible">True</property>
+                                    <property name="can_focus">True</property>
+                                    <property name="receives_default">False</property>
+                                    <property name="draw_indicator">True</property>
+                                  </object>
+                                  <packing>
+                                    <property name="position">0</property>
+                                  </packing>
+                                </child>
+                                <child>
+                                  <object class="GtkCheckButton" id="checkbutton2">
+                                    <property name="label" translatable="yes">M</property>
+                                    <property name="visible">True</property>
+                                    <property name="can_focus">True</property>
+                                    <property name="receives_default">False</property>
+                                    <property name="draw_indicator">True</property>
+                                  </object>
+                                  <packing>
+                                    <property name="position">1</property>
+                                  </packing>
+                                </child>
+                              </object>
+                              <packing>
+                                <property name="expand">False</property>
+                                <property name="fill">False</property>
+                                <property name="position">1</property>
+                              </packing>
+                            </child>
+                          </object>
+                          <packing>
+                            <property name="expand">False</property>
+                            <property name="fill">False</property>
+                            <property name="position">0</property>
+                          </packing>
+                        </child>
+                        <child>
+                          <object class="GtkDrawingArea" id="curve1">
+                            <property name="visible">True</property>
+                          </object>
+                          <packing>
+                            <property name="position">1</property>
+                          </packing>
+                        </child>
+                      </object>
+                      <packing>
+                        <property name="position">0</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <placeholder/>
+                    </child>
+                    <child>
+                      <placeholder/>
+                    </child>
+                  </object>
+                </child>
+              </object>
+              <packing>
+                <property name="position">1</property>
+              </packing>
+            </child>
+          </object>
+          <packing>
+            <property name="position">1</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkScrolledWindow" id="subterms">
+            <property name="visible">True</property>
+            <property name="can_focus">True</property>
+            <property name="hscrollbar_policy">never</property>
+            <child>
+              <object class="GtkVBox" id="vbox3">
+                <property name="visible">True</property>
+                <child>
+                  <object class="GtkHBox" id="subterm1">
+                    <property name="visible">True</property>
+                    <child>
+                      <object class="GtkLabel" id="label9">
+                        <property name="visible">True</property>
+                        <property name="label" translatable="yes">sub song01</property>
+                      </object>
+                      <packing>
+                        <property name="position">0</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkHBox" id="hbox6">
+                        <property name="visible">True</property>
+                        <child>
+                          <object class="GtkEntry" id="entry1">
+                            <property name="visible">True</property>
+                            <property name="can_focus">True</property>
+                            <property name="invisible_char">●</property>
+                          </object>
+                          <packing>
+                            <property name="position">0</property>
+                          </packing>
+                        </child>
+                        <child>
+                          <object class="GtkLabel" id="label10">
+                            <property name="visible">True</property>
+                            <property name="label" translatable="yes">ok</property>
+                          </object>
+                          <packing>
+                            <property name="position">1</property>
+                          </packing>
+                        </child>
+                      </object>
+                      <packing>
+                        <property name="position">1</property>
+                      </packing>
+                    </child>
+                  </object>
+                  <packing>
+                    <property name="position">0</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkHBox" id="subterm2">
+                    <property name="visible">True</property>
+                    <child>
+                      <object class="GtkLabel" id="label11">
+                        <property name="visible">True</property>
+                        <property name="label" translatable="yes">sub song01</property>
+                      </object>
+                      <packing>
+                        <property name="position">0</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkHBox" id="hbox5">
+                        <property name="visible">True</property>
+                        <child>
+                          <object class="GtkEntry" id="entry2">
+                            <property name="visible">True</property>
+                            <property name="can_focus">True</property>
+                            <property name="invisible_char">●</property>
+                          </object>
+                          <packing>
+                            <property name="position">0</property>
+                          </packing>
+                        </child>
+                        <child>
+                          <object class="GtkLabel" id="label12">
+                            <property name="visible">True</property>
+                            <property name="label" translatable="yes">ok</property>
+                          </object>
+                          <packing>
+                            <property name="position">1</property>
+                          </packing>
+                        </child>
+                      </object>
+                      <packing>
+                        <property name="position">1</property>
+                      </packing>
+                    </child>
+                  </object>
+                  <packing>
+                    <property name="position">1</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkHBox" id="subterm3">
+                    <property name="visible">True</property>
+                    <child>
+                      <object class="GtkLabel" id="label13">
+                        <property name="visible">True</property>
+                        <property name="label" translatable="yes">sub song01</property>
+                      </object>
+                      <packing>
+                        <property name="position">0</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkHBox" id="hbox7">
+                        <property name="visible">True</property>
+                        <child>
+                          <object class="GtkEntry" id="entry3">
+                            <property name="visible">True</property>
+                            <property name="can_focus">True</property>
+                            <property name="invisible_char">●</property>
+                          </object>
+                          <packing>
+                            <property name="position">0</property>
+                          </packing>
+                        </child>
+                        <child>
+                          <object class="GtkLabel" id="label14">
+                            <property name="visible">True</property>
+                            <property name="label" translatable="yes">ok</property>
+                          </object>
+                          <packing>
+                            <property name="position">1</property>
+                          </packing>
+                        </child>
+                      </object>
+                      <packing>
+                        <property name="position">1</property>
+                      </packing>
+                    </child>
+                  </object>
+                  <packing>
+                    <property name="position">2</property>
+                  </packing>
+                </child>
+              </object>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">False</property>
+            <property name="position">2</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkVBox" id="status">
+            <property name="visible">True</property>
+            <child>
+              <object class="GtkHBox" id="hbox1">
+                <property name="visible">True</property>
+                <child>
+                  <object class="GtkLabel" id="label1">
+                    <property name="visible">True</property>
+                    <property name="label" translatable="yes">input time:</property>
+                  </object>
+                  <packing>
+                    <property name="position">0</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkLabel" id="label2">
+                    <property name="visible">True</property>
+                  </object>
+                  <packing>
+                    <property name="position">1</property>
+                  </packing>
+                </child>
+              </object>
+              <packing>
+                <property name="position">0</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkHBox" id="hbox2">
+                <property name="visible">True</property>
+                <child>
+                  <object class="GtkLabel" id="label3">
+                    <property name="visible">True</property>
+                    <property name="label" translatable="yes">output levels:</property>
+                  </object>
+                  <packing>
+                    <property name="position">0</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkLabel" id="label4">
+                    <property name="visible">True</property>
+                  </object>
+                  <packing>
+                    <property name="position">1</property>
+                  </packing>
+                </child>
+              </object>
+              <packing>
+                <property name="position">1</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkHBox" id="hbox3">
+                <property name="visible">True</property>
+                <child>
+                  <object class="GtkLabel" id="label5">
+                    <property name="visible">True</property>
+                    <property name="label" translatable="yes">update period:</property>
+                  </object>
+                  <packing>
+                    <property name="position">0</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkLabel" id="label6">
+                    <property name="visible">True</property>
+                  </object>
+                  <packing>
+                    <property name="position">1</property>
+                  </packing>
+                </child>
+              </object>
+              <packing>
+                <property name="position">2</property>
+              </packing>
+            </child>
+            <child>
+              <object class="GtkHBox" id="hbox4">
+                <property name="visible">True</property>
+                <child>
+                  <object class="GtkLabel" id="label7">
+                    <property name="visible">True</property>
+                    <property name="label" translatable="yes">update status:</property>
+                  </object>
+                  <packing>
+                    <property name="position">0</property>
+                  </packing>
+                </child>
+                <child>
+                  <object class="GtkLabel" id="label8">
+                    <property name="visible">True</property>
+                  </object>
+                  <packing>
+                    <property name="position">1</property>
+                  </packing>
+                </child>
+              </object>
+              <packing>
+                <property name="position">3</property>
+              </packing>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">False</property>
+            <property name="position">3</property>
+          </packing>
+        </child>
+      </object>
+    </child>
+  </object>
+  <object class="GtkTextBuffer" id="textbuffer1">
+    <property name="text" translatable="yes">song01(t)</property>
+  </object>
+  <object class="GtkSizeGroup" id="sizegroup1">
+    <widgets>
+      <widget name="curve1"/>
+    </widgets>
+  </object>
+</interface>